Some s4pi wrappers (different/newer versions than those than come with S4PEv0.2.c but mostly older than 0.2d) are also available here.
S4PE wrappers by Snaitf: thread in this forum
More fixes/updates by Inge and Snaitf (CASPartResource, MeshChunks, RCOLChunks), 2014-11-09 / 11: Download

As I understood it, some? few? many? creators are converting TS4 -> TS3 at the moment, do all their meshing there (since they can use all the tools that are available for TS3), and then convert back. Thereâ€™s a GEOM converter among Cmarâ€™s Mesh Tools, too. (That particular editor was also recommended by someone who did meshy stuff for TS4 .. I donâ€™t remember who/what/where though)